theory about special kind of resonator

yefj

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Hello ,I have the following resonator Its very intresting.
I need to simulate it .Is there some theory regarding this resonator ? so i could control it and see which modes could be made from it?
Thanks.





 

UPDATE:
I got a mode where the H-field is which is going threw the hole of the "disk" and the E-field is surounding it
As shown below.The frequency of this mode is 7Ghz.
How do i controll the resonance frequency of this ode in such structure?
Thanks.



 

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